CVE-2026-89049

    Dashboard / Vulnerabilities / CVE-2026-89049

    CVE-2026-89049

    Published: 10 Sept 2026Last Modified: 11 Sept 2026

    Summary: Server-side request forgery in the Session Manager port forwarding functionality in AWS Systems Manager Agent

    Details: A server-side request forgery issue due to improper validation of equivalent address representations in the port forwarding to remote hosts functionality in Amazon AWS Systems Manager Agent (SSM Agent) before 3.3.4851.0 on all platforms might allow an authenticated remote user to bypass the remote destination denylist and reach link-local endpoints, potentially obtaining the temporary IAM role credentials of a managed instance and acting with that role's permissions from outside the instance, via a crafted destination host value that uses an alternate representation of a denied link-local address. To remediate this issue, users should upgrade to version 3.3.4851.0 or later.

    References: https://aws.amazon.com/security/security-bulletins/2026-107-aws/, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89049.json, https://github.com/aws/amazon-ssm-agent/releases/tag/3.3.4851.0, https://github.com/aws/amazon-ssm-agent/security/advisories/GHSA-w9jw-h72g-6hxc, https://nvd.nist.gov/vuln/detail/CVE-2026-89049

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -e5ff032880c19bac9b1a0f37a7448a9b573721de

    Affected versions

    3.3.4793.0
    3.3.4624.0
    3.3.4515.0
    3.3.4364.0
    3.3.4268.0
    3.3.4177.0
    3.3.4121.0
    3.3.4108.0
    3.3.3883.0
    3.3.3797.0
    3.3.3598.0
    3.3.3572.0
    3.3.3270.0
    3.3.3185.0
    3.3.3050.0
    3.3.2958.0
    3.3.2746.0
    3.3.2656.0
    3.3.2471.0
    3.3.2299.0
    3.3.1957.0
    3.3.1802.0
    3.3.1611.0
    3.3.1345.0
    3.3.1311.0
    3.3.1230.0
    3.3.1142.0
    3.3.987.0
    3.3.859.0
    3.3.808.0
    3.3.551.0
    3.3.484.0
    3.3.418.0
    3.3.380.0
    3.3.337.0
    3.3.217.0
    3.3.131.0
    3.3.40.0

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-89049 | CVE-DB